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Surface morphologies of polyethtylene samples exhibitng highest weight loss percentage: a) Sample A for 20 days magnified at 1000x, 1500x and 2000x; b) Sample G for 30 days magnified at 1000x, 1500x and 2000x; c) Sample A for 55 days magnified at 1000x, 1500x and 2000x.
